Microsoft provides:
Tier-2 (UAT) Environment
Used for testing, training, and integrations
Production Environment
Includes high availability and disaster recovery
Additionally:
100 GB file/blob storage
10 GB Azure SQL database storage (expandable)
Extra sandbox environments can be purchased if needed.
First read the answer fully, then try to explain it in your own words. After that, open a few related questions and compare the concepts. This method helps you remember the topic for a longer time and improves exam preparation.